#!/usr/bin/env node

const fs  = require('fs'),
    src = process.argv[2],
    dst = process.argv[3];

let srcStream = fs.createReadStream(src),
    dstStream = fs.createWriteStream(dst);

srcStream.pipe(dstStream);
dstStream.on('close',() => {
    fs.chmodSync(dst,fs.statSync(src).mode); //权限复制
});

//异步操作完成后进行下一步操作
